Shin guard



FIG. 1 is a plan view of a shin guard showing my design;

FIG. 2 is a bottom left perspective view thereof; and,

FIG. 3 is a bottom perspective view thereof.

The long-and-short broken lines form an unclaimed boundary around at least a portion of the claimed subject matter, and form no part of the claim. The even-length broken lines, which show the remainder of the article, are directed to environment, represent unclaimed subject matter, and form no part of the claimed design. 

CLAIM The ornamental design for a shin guard, as shown and described. 